Halo Wars

Halo: Combat Evolved | Halo 2 | Halo 3 | Halo 4 | Halo 5: Guardians | Halo Infinite

Other
Halo 3: ODST | Halo Reach | Halo: The Master Chief Collection

Spin-off games
Halo Wars | Halo Wars 2

Mobile games
Halo: Spartan Assault | Halo: Spartan Strike

Apps
Halo Waypoint | Halo Channel

Developers & Publishers
343 Industries | Bungie | Xbox Game Studios | Vanguard Games